Compressor.



W. WI BROWN.

COMPRESSOR. APPLICATIONJILED am. 12, 1 914.

Patented June 8,1915.

2 SBEETS-SHEET I.

vw'. w. BROWN.

COMPRESSOR. APPLICATION mm MAR. 12, 1914.

1,142,299, .v 1 PatentedJune 8,1915.

2 HEETS-SHEET 2. Y

8L1 0424 1 oz oomso'sssos Zb all whom may concern:

lie it known that ii, WALTER W. BROWN, a citizen oithe -Ucitezi States,residing at Erie, in the county of Erie and State of emlsylvenia, haveinvented new 'md useful Improveme ts iii Gompressors, of which thefollowing is e sgiecification. o

This inventiozi relates to compressors and consists in certainimprovements in the eonstruction thereof as will be hereinafter i'ullydescribed and pointed out 311 the specification and claims.

More particularly the invention reletes to the inlet slidgdischargevalve mechanism of a compressor. Some dificulty has been encounteredwith compressors in the heating of the discharge valve by discharged ailor gases.

ne,of the objects of the invention is to reduce this by drawing the airinto the compressor in passages ad acent to the discharge passages. incarrying out the mvention the inlet valve is arranged Within thedischarge oessages so that the incoming airicools the valve.

The invention is illustrated in the accompanying drawings as followsFigure l is a central section through acompressor. Fig.2 a. sideelevation of one of the valve disks. Fig. 3 a plan view of the some. Fi4 a section on the valve member. Fig. 5 ep on view of the some part.Fig. 6 a section of a spring supporting cap. Fig. 7 a plan view of thesame part. Fig. 8 an enlarged view, partly in section and partly inelevation of the valves.

i ls shown the compressor is formed for two stage compression.

1 marks the low pressure cylinder, 2 the high pressure cylinder, 8 thelow pressure piston, i the high pressure PlSl70Zl &I1d 5 the mtercooler.These parts may he of any desired construction, the one shown beingadapteli to be used with 2, Diesel engine.

In order to regulate the amount of oil drawn into the cylinder, 1provide a valve mechanism made up of a cylindrical shell 6 having s.series off longitudinal slots 8. This Shell 13 extended'over a somewhatsimilar shell 7 and is telescopically mounted on the shell 7, the shell7 having the longitudinal slots 9 for the admission of air The shell hasthe head 10 with the openings 11 Specification of Letters stem;

Application filed larch 12, 1914. Serial m; 824 158.

'25 t on 11 through in nesting with an annular powage L Patented June8;, 1915,

through it. A screw 12 is secured to the heed l0 and exte ds through ahead. 13 on the shell *5. By simply turning the shell 5 it may beaoljusted up or clown on the shell 7 thus opening or closing a, portionof the slots 8 and 9, thus increasing or decreasing the cepscit of the"inlet. The shell 6 is locked in a j has its outer surface knurled at 15so the I may be morereadily tug-nod.

he shell 7 is screwed into an inlet be! 18. A valve member 17 issecuretlto the inlet member and the spring sup ortihg member 18 issecured to the valve memher, A bolt 19 is screwed into the springsupport ing member 18 and extends upwardly through the valve member andthrough e 7, head 22 in the inlet member 16. A 9.3

is arranged on the bolt 19 by means oi which the three members, theinlet member 18 13h.-

valve member 17 and the sprin supportihg member 18 are securel clam e toother so Y 8 and 9 may pass through the shell 2 through the head 24through the inlet mess her into the valve member. The valve member has aseries ofpassages 25 extending in an axial direction from the 25 of thevalve member and these passages extend through the seat 26 on thebottom.

of thevalve member, A valve oisk 2? is adapted to close the passage 25by seating on the seat 26. A spring 28 tends to holtl the valve 27 toits seat, the spring being so ranged in a. socket 29 in the sprm ingmember 18. On the in stroke of the compressor the air passes by Wavy ofthe passe g the passages 25, valve 2? a e valve pocket 30 and islet paso 31 to the compressor. e air is-discharged to the passage 3 "cemiiiigfrom the pocket, the passage 32 cc ookct formed crowd the vslvememhei' Pislet The valve pocket central passage supooit Y ustment by a lock nut3.4 cool it 50 port leading slioulder 3a and the inlet member has theshoulder 35 adapted to seat on the shoulder 34,- a'packing 36 beingpreferably used on the seat. The 'pocket also has the shoulder 37 onwhich the shoulder 38 of the valve member seats, a gasket 39 bem'preferably tween'the ,used on this seat. The space valvemember and thepocket below the gasket 39 forms a passage 40 through WhlCh the air isdischarged, the air entermgthe passages 41 in the valve member. The pas=sages 41 extend through the seat 42 on the topof the valve member andthe valve disk 43 exactly similar to the valve disk 26 is adapted toclose the passage by the valve member-operating on the seat. The valve43 is carriedto its seat by gra'wty. Its upward movement is limited ythe shoulders '44 arranged on the periphery of. the 1n1et member 16.

The operation .of the device is as follows :Air is drawn'in throu h theslots 7 and 8, passing down through t e inlet memher by way of thepassages 24 through the valve member by the passages through thepassages 25, the difference in pressure opening the valve 27. The air isdischarged to the pocket and gasses by the passage 31 to the compressor.n the discharge stroke 30 the airzplassesby way of the discharge surrounmg the valve member to the pass'ages 41, thence by way' of the valve tothe discharge passages 33 and 32. It will be ob. served that thedisc-bar epassages surround the inlet passages and t e discharge valveis in contact with the walls inclosing the inlet passage, As the normaltemperature air is drawn through the inlet passages it cools thewalls'of t ese assages thus reducing the temperature of t e partssubjected to the heat of the discharged gases.

' By taking the air into the compressor and disc arging it'thfough thesame passa e a" discharge of lubricant is largely avoided 46 becausethesvelocity of the incoming-air and the time during which it isdelivered has a greater driving force than the air beingdischarged. 'Asa consequence the tendency is to drive any lubricant which may reach theto the cylinder back into :the

' cylmder. i

What I claim as new is 1. Ina compressor, the combination of a cylinder;a piston in said cylinder; inlet 7 iand'ill'scliarge valves for saidcylinder comprising an 1n1et member; a valve member secured to saidinlet member; having concentric passages in the valve member in opposltedirections; and concentric check valves seating on said'valve member inopposite directions and controlling said passages. f

2. In a'compressor, the combination-ofa cylinder; having 8- valvepocket, .said pocket having-a discharge opening and an opening V ecylinder;

leading. to the cylinder, the pocket having annular shoulders atopposite sides of the discharge passage; an inlet member seated on oneof said shoulders; a valve member seated on the other of said shouldersand forming a joint with the inlet member, said valve member havingoppositely directed passages; and a valve disk controlling the dischargepassages arranged between the inlet member and the valve member, thevalve disk controlling the inlet passages.

3. In a compressor, the combination of a cylinder having a valve pocket,said pocket having a discharge opening and an opening leading to thecylinder, t e pocket aving annular shoulders at opposite sides ofthedischarge passage; an 1n1et member seated on one of said shoulders; avalve member forming a joint with the inlet member and seating on theother valve member having opposite directions, one eading from the in--let and the other to the discharge; a spring cap arranged on the valvemember; a bolt for clamping the inlet member, valve membar and springcap together; and valves assages leading in aatingon the passages in thevalve memmember surrounding saidpassages; and valves operating on saidseats. a compressor, the combination of a cyhnder; a'pistontherein';inlet and discharge valves connected with the cylinder, 1 i 4compzising an inlet ,web

.-ing a joint with the inlet member, said valve member having passagesextending in opposite directions, one from within the valvemember 'havma member and the other from without a valve member; seats at the ends ofthe valvej' V member surrounding said passages; valves",

operating on said seats; and means for, v c ampmg the inlet th andvalvemember's ge er. a

6. In a compressor, cylinder; a piston therein; an inlet valve, for thecylinder; a regulator for the inlet, valve comprising telescopingshells, .each. havm slots; a screw extending from one of said s ellsthrough 'the opposlte shell; and

means for adjusting one of said shells on said screw to vary the openingto the inlet. In a compressor, the combination of a 0 linder; a pistontherein; an inlet valve fora regulator for the inlet valve of saidshoulders, said 5 a piston therein; inlet and dis- 95 dhead therein; avalve member fo rmno the combination of a 120 comprising telescopingshells, each of said In testimony whereof I have hereunto set shellshaving slots and ahead; and a screw my hand in the presence of twosubscribing secured to the head of one of said shells and Witnesses. v

' WALTER W. BROWN.

having a screw threaded connection with the other of said shells, saidshells having Witnesses:

slots therein adapted to be varied by the B. M. HABTMAN, telescoping ofone shell upon the other. 7 H. C. LORD.

